SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 6) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Promotional Allowances
Estimated departmental costs of providing promotional allowances	$ 41,808,000	$ 43,168,000	$ 40,689,000
Advertising Costs
Advertising expense	5,200,000	5,200,000	4,700,000
Gaming Taxes
Total gaming taxes	16,000,000	16,100,000	12,200,000
Food and beverage
Promotional Allowances
Estimated departmental costs of providing promotional allowances	22,855,000	21,713,000	20,464,000
Hotel
Promotional Allowances
Estimated departmental costs of providing promotional allowances	2,893,000	2,622,000	2,850,000
Other
Promotional Allowances
Estimated departmental costs of providing promotional allowances	1,732,000	1,777,000	1,857,000
Promotional allowances
Promotional Allowances
Estimated departmental costs of providing promotional allowances	$ 27,480,000	$ 26,112,000	$ 25,171,000